被an(a)除尽． 我们设 ai(a)=a()p().对A(2)作下述初等行变换：an(a) .. a,(a)A(2) =an(a) ... a,(a)a(a)a,(a)[i-1(p]0.. a,(a)-a,;(a)p(a)88.2入一矩阵的标准形§8.2 λ─矩阵的标准形 被 11 除尽. a ( )  对 A( )  作下述初等行变换: 11 1 1 ( ) ( ) ( ) ( ) ( ) j i ij a a A a a          =       11 1 1 ( ) ( ) 0 ... ( ) ( ) ( ) ... j ij j a a a a             −     1 11 ( ) ( ) ( ). i 我们设 a a     = i − 1( )  